CN212694976U

CN212694976U - Novel transformer structure

Info

Publication number: CN212694976U
Application number: CN202021779415.0U
Authority: CN
Inventors: 易德发; 赵恒涛; 林新传
Original assignee: Ganzhou Chaoyue Electronics Co ltd
Current assignee: Ganzhou Chaoyue Electronics Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-03-12
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a novel transformer structure, including magnetic transformer core, magnetic transformer core's up end fixedly connected with sharing magnetic core, the up end fixedly connected with inductance magnetic core of sharing magnetic core, the inside fixed mounting of inductance magnetic core has inductance winding board, the up end one end through connection of inductance winding board has inductance terminal, the inside fixed mounting of sharing magnetic core has second transformer winding board, magnetic transformer core's inside fixed mounting has first transformer winding board, the up end both ends through connection of first transformer winding board and second transformer winding board has transformer terminal. The utility model integrates the inductor and the transformer into a product in a magnetic integration mode; the transformer and inductor integrated transformer is suitable for occasions with low height or large safety distance; leakage inductance, inductance and DCR tolerance can be strictly controlled; and the full automation of the transformer production is realized, and the mass production is convenient.

Description

Novel transformer structure

Technical Field

The utility model relates to an electronic equipment technical field specifically is a novel transformer structure.

Background

A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), etc., and the inductor has a structure similar to a transformer but with only one winding. The inductor has an inductance that only impedes the change in current. If the inductor is in a state where no current is passing, it will try to block the current from flowing through it when the circuit is on; if the inductor is in a current passing state, the inductor will try to keep the current unchanged when the circuit is opened. Inductors, also known as chokes, reactors, dynamic reactors, are commonly used electronic devices with high usage.

The inductor and the transformer in the current market are manufactured separately. And the winding of the conventional transformer is manually wound by matching a two-axis machine at present, so that the automatic production cannot be realized, the efficiency is low, even if the parasitic parameters of the transformer produced by the winding wound by the same person are complex, the consistency of leakage inductance, DCR and size is poor, the consistency of the characteristics is poor between the transformers wound by different persons, and the finished product has high size and is difficult to meet the requirement of the automatic production. Meanwhile, the existing transformer is mostly required to be synchronously used in combination with the inductor, the inductor is independently placed, so that the height of the transformer is further improved, the space utilization rate of equipment is low, and the parasitic parameters and consistency of the equipment are influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel transformer structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel transformer structure, includes the magnetic transformer core, the up end fixedly connected with sharing magnetic core of magnetic transformer core, the up end fixedly connected with inductance magnetic core of sharing magnetic core, the inside fixed mounting of inductance magnetic core has inductance winding board, the up end one end through connection of inductance winding board has the inductance terminal, the inside fixed mounting of sharing magnetic core has second transformer winding board, the inside fixed mounting of magnetic transformer core has first transformer winding board, the up end both ends through connection of first transformer winding board and second transformer winding board has the transformer terminal, the inside of first transformer winding board, second transformer winding board is equipped with at least one deck PCB board.

Preferably, the PCB board includes epoxy board, via hole, first winding and second winding, the via hole is seted up in the up end both sides of epoxy board, first winding fixed connection is in the up end of epoxy board, second winding fixed connection is at the lower terminal surface of epoxy board.

Preferably, the first winding and the second winding are provided with connecting holes matched with the via holes, and the first winding and the second winding are electrically connected with the transformer terminal through the via holes.

Preferably, the first winding and the second winding are both packaged on the upper end face and the lower end face of the epoxy board in the form of copper sheets.

Preferably, the adjacent first windings and second windings are separated by epoxy boards between the multilayer PCB boards.

Preferably, an annular copper sheet is arranged inside the inductance winding board, two ends of the annular copper sheet are respectively connected with the inductance terminal, and the annular copper sheets are separated through an epoxy board.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a can be through the integrated mode of magnetism through being equipped with sharing magnetic core with inductance and transformer integration in a product to reduce parasitic parameter, reduce the cost by a wide margin and reduce the product volume, the cost is reduced by a wide margin, all windings are all encapsulated in PCB with the form of copper sheet simultaneously, can realize the flattening of winding, the height is dwarfed through the width and the thickness of adjustment copper sheet; all the windings are isolated by the epoxy plates, so that the requirement of large safety distance can be met, the transformer is particularly suitable for occasions requiring short height or large safety distance by customers, the PCB and the inner windings of the PCB can be automatically produced by machines, the sizes of all the windings and the sizes of the epoxy plates for isolating the distances among the windings can be controlled very accurately, the leakage inductance, the inductance and the DCR of the transformers produced in batches are good, the consistency of the size and the appearance is good, the tolerance of the transformers can be controlled with high precision, and the structure is convenient for large-scale automatic production of equipment.

Drawings

FIG. 1 is a schematic view of the main structure of the device of the present invention;

FIG. 2 is a cross-sectional view of the main body of the device of the present invention;

fig. 3 is a top view of the PCB of the present invention;

fig. 4 is a bottom view of the PCB of the present invention.

In the figure: the transformer comprises a 1-inductance magnetic core, a 2-inductance terminal, a 3-shared magnetic core, a 4-transformer magnetic core, a 5-first transformer winding board, a 6-transformer terminal, a 7-PCB board, a 8-second transformer winding board, a 9-inductance winding board, a 10-epoxy board, an 11-via hole, a 12-first winding and a 13-second winding.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: the utility model provides a novel transformer structure, including magnetic transformer core 4, magnetic transformer core 4's up end fixedly connected with sharing magnetic core 3, magnetic core 3's up end fixedly connected with inductance magnetic core 1 shares, 1 inside fixed mounting of inductance magnetic core has inductance winding board 9, the up end one end through connection of inductance winding board 9 has inductance terminal 2, the inside fixed mounting of sharing magnetic core 3 has second transformer winding board 8, magnetic transformer core 4's inside fixed mounting has first transformer winding board 5, the up end both ends through connection of first transformer winding board 5 and second transformer winding board 8 has transformer terminal 6, first transformer winding board 5, the inside of second transformer winding board 8 is equipped with at least one deck PCB board 7.

PCB board 7 includes epoxy board 10, via hole 11, first winding 12 and second winding 13, via hole 11 sets up in the up end both sides of epoxy board 10, first winding 12 fixed connection is in the up end of epoxy board 10, second winding 13 fixed connection is in the lower terminal surface of epoxy board 10, first winding 12 and second winding 13 offer the connecting hole with via hole 11 looks adaptation, first winding 12 and second winding 13 pass through via hole 11 and transformer terminal 6 electrical property and link to each other, first winding 12 and second winding 13 all encapsulate the up end and the lower terminal surface of epoxy board 10 with the copper sheet form, separate adjacent first winding 12 and second winding 13 through epoxy board 10 between the multilayer PCB board 7, the inside of inductance winding board 9 is equipped with annular copper sheet, the annular copper sheet both ends link to each other with inductance terminal 2 respectively, and separate through epoxy board 10 between the annular copper sheet.

The working principle is as follows: the inductance winding is packaged in a PCB multi-layer board by a ring-shaped copper sheet, the first winding 12 and the second winding 13 are packaged in the PCB 7 in the first transformer winding board 5, so that the first output of the transformer winding and the first primary of the transformer are packaged in the PCB multi-layer board, the first winding 12 and the second winding 13 are packaged in the PCB 7 in the second transformer winding board 8, so that the second output of the transformer winding and the first primary of the transformer are packaged in the other PCB multi-layer board, and the effect of connecting the first primary of the transformer and the second primary of the transformer in parallel is realized by the connection of the transformer terminals 6; the inductor and the transformer share one common magnetic core 3, and windings are separated, so that the purpose of integrating the inductor and the transformer by one product is realized. All windings are packaged in the PCB 7, and the epoxy boards 10 are arranged among all the windings in the PCB 7 for isolation, so that the requirement of safety distance of a customer can be met. The PCB 7 of encapsulation winding is automated machine production for 7 overall dimension uniformity of PCB are fabulous, thereby satisfy transformer automated production's requirement, and through automated machine production, make the uniformity of winding good, keep apart the epoxy thickness uniformity of distance between the winding high, thereby realize transformer parasitic parameter, leakage inductance, the good effect of DCR uniformity.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A novel transformer structure, includes magnetic core of transformer (4), its characterized in that: the utility model discloses a transformer core's (4) up end fixedly connected with sharing magnetic core (3), the inside fixed mounting of inductor core (1) has inductance winding board (9), the up end one end through connection of inductance winding board (9) has inductance terminal (2), the inside fixed mounting of sharing magnetic core (3) has second transformer winding board (8), the inside fixed mounting of transformer core (4) has first transformer winding board (5), the up end both ends through connection of first transformer winding board (5) and second transformer winding board (8) has transformer terminal (6), the inside of first transformer winding board (5), second transformer winding board (8) is equipped with at least one deck PCB board (7).

2. The novel transformer structure of claim 1, wherein: PCB board (7) include epoxy board (10), via hole (11), first winding (12) and second winding (13), the up end both sides at epoxy board (10) are seted up in via hole (11), first winding (12) fixed connection is at the up end of epoxy board (10), second winding (13) fixed connection is at the lower terminal surface of epoxy board (10).

3. The novel transformer structure of claim 2, wherein: the transformer is characterized in that the first winding (12) and the second winding (13) are provided with connecting holes matched with the through holes (11), and the first winding (12) and the second winding (13) are electrically connected with the transformer terminal (6) through the through holes (11).

4. A novel transformer structure according to claim 3, characterized in that: the first winding (12) and the second winding (13) are packaged on the upper end face and the lower end face of the epoxy board (10) in a copper sheet mode.

5. The novel transformer structure of claim 2, wherein: the adjacent first winding (12) and the second winding (13) are separated by the epoxy board (10) between the multilayer PCB boards (7).

6. The novel transformer structure of claim 1, wherein: the inductance winding board is characterized in that an annular copper sheet is arranged inside the inductance winding board (9), two ends of the annular copper sheet are connected with the inductance terminals (2) respectively, and the annular copper sheets are separated through epoxy boards (10).